Question

does the filename in src attribute of an img tag has a limit in number of characters? or compatibility issue among operating system(OS) browsers…

for example:

<img src="../img/misc/this-is-a-very-long-image-filename-of-an-image-named-leaders-systems02.gif" alt="Leaders Systems" class="emblem" />

is there no issue on this-is-a-very-long-image-filename-of-an-image-named-leaders-systems02.gif in all OS browsers??

Answer 1

You will be bounded by the maximum URL length per browser. The HTTP server may also send you an HTTP 414 “Request URI too long”. The standard does not dictate what this size is, but allows a server to make such a response.

From the HTTP/1.1 standard S10.4.15:

10.4.15 414 Request-URI Too Long

The server is refusing to service the
request because the Request-URI is
longer than the server is willing to
interpret. This rare condition is only
likely to occur when a client has
improperly converted a POST request to
a GET request with long query
information, when the client has
descended into a URI “black hole” of
redirection (e.g., a redirected URI
prefix that points to a suffix of
itself), or when the server is under
attack by a client attempting to
exploit security holes present in some
servers using fixed-length buffers for
reading or manipulating the
Request-URI.